title: Combined surface micropatterning and reactive chemistry maximizes tissue adhesion with minimal inflammation.
abstract: The use of tissue adhesives for internal clinical applications is limited due to a lack of materials that balance strong adhesion with biocompatibility. The use of substrate topography is explored to reduce the volume of a highly reactive and toxic glue without compromising adhesive strength. Micro-textured patches coated with a thin layer of cyanoacrylate glue achieve similar adhesion levels to patches employing large amounts of adhesive, and is superior to the level of adhesion achieved when a thin coating is applied to a non-textured patch. In vivo studies demonstrate reduced tissue inflammation and necrosis for patterned patches with a thinly coated layer of reactive glue, thus overcoming a significant challenge with existing tissue adhesives such as cyanoacrylate. Closure of surgical stomach and colon defects in a rat model is achieved without abdominal adhesions. Harnessing the synergy between surface topography and reactive chemistry enables controlled tissue adhesion with an improved biocompatibility profile without requiring changes in the chemical composition of reactive tissue glues.
authors.affiliation: Division of Biomedical Engineering Department of Medicine, Center for Regenerative Therapeutics Brigham and Women's Hospital, Harvard Medical School Harvard Stem Cell Institute, Harvard-MIT Division of Health Sciences and Technology 65 Landsdowne St., Cambridge, MA, 02139, USA; Biocant- Biotechnology Innovation Center, CNC-Center of Neurosciences and Cell Biology, University of Coimbra, 3004-517, Coimbra, Portugal.
authors.forename: Maria J N
authors.initials: MJ
authors.lastname: Pereira
authors.forename: Cathryn A
authors.initials: CA
authors.lastname: Sundback
authors.forename: Nora
authors.initials: N
authors.lastname: Lang
authors.forename: Woo Kyung
authors.initials: WK
authors.lastname: Cho
authors.forename: Irina
authors.initials: I
authors.lastname: Pomerantseva
authors.forename: Ben
authors.initials: B
authors.lastname: Ouyang
authors.forename: Sarah L
authors.initials: SL
authors.lastname: Tao
authors.forename: Kevin
authors.initials: K
authors.lastname: McHugh
authors.forename: Olive
authors.initials: O
authors.lastname: Mwizerwa
authors.forename: Praveen K
authors.initials: PK
authors.lastname: Vemula
authors.forename: Mark C
authors.initials: MC
authors.lastname: Mochel
authors.forename: David J
authors.initials: DJ
authors.lastname: Carter
authors.forename: Jeffrey T
authors.initials: JT
authors.lastname: Borenstein
authors.forename: Robert
authors.initials: R
authors.lastname: Langer
authors.forename: Lino S
authors.initials: LS
authors.lastname: Ferreira
authors.forename: Jeffrey M
authors.initials: JM
authors.lastname: Karp
authors.forename: Peter T
authors.initials: PT
authors.lastname: Masiakos
mesh_terms: D058107:Abdominal Wound Closure Techniques / Q000295:instrumentation*; D000818:Animals; D001672:Biocompatible Materials / Q000009:adverse effects / Q000737:chemistry*; D003106:Colon / Q000187:drug effects / Q000473:pathology / Q000601:surgery; D003487:Cyanoacrylates / Q000009:adverse effects / Q000737:chemistry*; D005260:Female; D007249:Inflammation / Q000139:chemically induced* / Q000473:pathology; D009336:Necrosis; D051381:Rats; D013270:Stomach / Q000187:drug effects / Q000473:pathology / Q000601:surgery; D013499:Surface Properties; D014014:Tissue Adhesives / Q000009:adverse effects / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D003487:Cyanoacrylates; D014014:Tissue Adhesives
keywords: biocompatibility; biodegradable glues; bioinspired; microtextured surfaces; wet tissue adhesives